Fault removal
PlasmaQuant PQ 9000
Edition 05/2014
67
−
The nebulizer gas is set too low
−
Optimize the carrier gas flow
−
Adjustment on the analyte
channel
−
Adjust the x/y offset for the method parameter in the P
LASMA
/
A
DJUST PLASMA VIEW
window (see the online help or the
ASpect PQ operating instructions)
−
There is a leak in the sample
introduction system (sample and
pump hoses)
−
Check the sample and pump hoses and their plug connectors
−
The windows in the plasma
compartment are dirty
−
Replace the windows
−
The transparency in the UV
vacuum is missing
−
Check the duration of the purge gas flow; wait until the purge
gas has completely purged the spectrometer compartment
The sensitivity is too low
Cause
Remedy
−
The cause and remedy are the
same as for the error indication
No signal
The measured value is too low
Cause
Remedy
−
Calibration is incorrect
−
Check the calibration solutions
−
Low solubility substances lead
to low concentrations
−
Low solubility substances are
not completely digested
−
Optimize sample preparation
−
Volatile substances escape
during sample preparation
−
Optimize sample preparation
−
There is a spectral interference
in the calibration standard
−
Use another analytical line
−
Error in the background
correction
−
Select background correction points that are not spectrally
disturbed
−
Better adjustment of a curved background by a non-linear
correction function
−
When using an internal standard
−
Wrong dosage
−
The internal standard is not in the linear range
select a
lower concentration for the internal standard
−
The adjustment of the response to changes in the plasma
temperature is inadequate
1. Adjust the matrix
2. Find a better adjustment between the behavior of the
analysis line and the internal standard
−
Contamination/carry-over in the
cal/zero solution
−
Remedy the cause of carry-over/contamination
−
The sample solution is viscous /
has a higher density than the
calibration solution
−
1. Adjust the matrix (add to calibration solutions or dilute)
−
2. Use one/several internal standards
−
The pump hose is new
−
Wait until hose delivery is stable
−
The spray chamber is filled
−
Empty the spray chamber
−
Check the pump hose for drainage; if necessary, select a
larger cross-section
